# Impulse Blocker

> Block distracting websites. Just list the sites you want Impulse Blocker to pause or completely avoid.

Canonical page: [https://chrome-stats.com/d/impulse-blocker](https://chrome-stats.com/d/impulse-blocker)

## Overview

- **ID:** `impulse-blocker`
- **Platform:** Firefox
- **Type:** Firefox add-on
- **Status:** Available
- **Publisher:** raicem
- **Category:** privacy-security,other
- **Daily users:** 8,954
- **Weekly downloads:** 37
- **Rating:** 4.21 / 5 (294 ratings)
- **Version:** 1.3.1
- **Last updated:** 2026-07-15
- **First published:** 2017-03-04
- **Size:** 1.07 MB
- **Data as of:** 2026-09-08
- **Store listing:** [Firefox Add-ons Store](https://addons.mozilla.org/firefox/addon/impulse-blocker/)
- **Website:** [https://github.com/raicem/impulse-blocker](https://github.com/raicem/impulse-blocker)

## Description

Impulse Blocker is a powerful Chrome extension designed to help you maintain focus by blocking distracting websites. Simply list the sites you want to pause or avoid completely, and Impulse Blocker takes care of the rest, making it easier than ever to stay productive.

This tool is fully open source, allowing users and developers to explore and contribute to its codebase on GitHub. For detailed instructions and tips on getting the most out of Impulse Blocker, a comprehensive user guide is available online. Thanks to the contributions from the community, especially Crote and pnokker, this extension continues to improve and support effective web browsing habits.

## Rankings

- #823 — Overall
- #117 — Other extensions
- #182 — Privacy & Security
- #15 — pull
- #23 — ad blocker
- #24 — writer's block

## Permissions and access

### Permissions

- `<all_urls>`
- `webRequest`
- `webRequestBlocking`
- `storage`
- `tabs`

## Safety

- **Risk impact:** High risk impact
- **Risk likelihood:** Moderate risk likelihood

### Analysis details

- Allows access to all websites, posing a significant security risk as it can monitor and modify data from any visited site.
- This extension has low user count. Unpopular extensions may not be stable or safe.

> Some risk analysis details are omitted from this free response. [Upgrade to view the full analysis](https://chrome-stats.com/pricing).

## Review summary

Overall, Impulse Blocker is praised as a simple, effective site blocker that works for many users: easy to set up, quick to add sites, and helpful for beating procrastination and addictive browsing. However, several reviews note reliability issues or platform limits—especially on Android—and privacy concerns about broad data permissions. Some users also dislike the post-block page, and the pause/disable flow can feel cumbersome, prompting calls for stronger disable controls (e.g., 2FA). Despite these, many users consider it one of the best site-blocking tools available.

### Pros

- Blocks sites effectively and as advertised.
- Simple to set up and easy to add sites.
- Helps reduce procrastination and maintain focus.
- Reliable and lightweight; no major bugs reported.
- Highly regarded by users as a top site-blocker.

### Cons

- Some users report it does not work at all.
- Android version is not supported; not working on Android.
- Privacy concerns about permission to read all webpage data, including passwords.
- Pause/disable flow can be inconvenient; users want stronger disable controls (e.g., 2FA).
- A blocked-page overlay appears after blocking, which some users find annoying.

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Source: [Chrome-Stats](https://chrome-stats.com/d/impulse-blocker)